Method of and means for correcting carbon copies



V. O. 'WEIS July 13, 1965 METHOD OF AND MEANS FOR CORRECTING CARBON COPIES FIG-2 FIG-3 llo FIG-4 IN V EN TOR.

\Aoiu 0. Weis FIG-5 United States Patent 3,194,587 METHOD OF AND MEANS FOR CQRRECTING CARBON COPIES Viola 0. Weis, Uniontown, Wash. Substituted for abandoned application Ser. No. 125,764, July 21, 1961. This application June 1, 1964, Ser. No.

3 Claims. (Cl. zen-2s This application is a substitution for application 125,- 764, filed July 21, 1961, and now abandoned.

My present invention is a method of and means for correcting typewritten carbon copies.

A principal object of my present invention lies in the provision of a method of and means for correcting typewritten carbon copies which enables one to simulate the degree of intensity of carbon and the depiction of characters added by correction to substantially coincide with the balance of the typewritten characters on the carbon copy.

Another object of the present invention lies in the provision of carbon copy correction tabs having bodies of sheet-like materials of various physical characteristics which are associated with a transfer material whereby, by manual selection of proper body material and transfer material, corrections may be made to a typewritten copy which corrections may be substantially coincidental in ap pearance to the characters of the carbon copy.

Yet another object of the present invention lies in the provision of carbon copy correction tabs having a transfer material on a fractional portion of one side face.

Another object of the present invention lies in the provision of a carbon copy correction tab having a transfer medium on a fractional portion of one side face which medium carries a transfer material and is secured to the sheet-like body of the correction tab along the marginal side edges thereof only and thus defines an air space between the transfer medium and the correction tab.

These and further objects and advantages of the present application will become apparent to the reader as he progresses through the following specification when considered in conjunction with the accompanying drawings wherein like numerals are employed to designate like parts, and wherein:

FIGURE 1 is a front elevation of an improved carbon copy correction tab and lined along the lower fractional marginal edge portion of one side face to depict the color black;

FIGURES 2 and 3 are vertical sections taken on a plane substantially 90 from the face shown in FIGURE 1 and showing the sheet-like body material of FIGURE 2 being of different thickness from that disclosed in FIGURE 3;

FIGURE 4 is a fragmentary horizontal cross section upon a greatly enlarged scale having parts broken away and showing a modified species with the sheet-like body material and transfer medium secured together along their marginal side edges by means of an adhesive;

FIGURE 5 is a fragmentary front elevation of a further modified species wherein the transfer medium is secured to the sheet-like body material by the mechanical means of staples; and

FIGURE 6 is an enlarged fragmentary section taken substantially on the plane indicated by line 66 of FIG- URE 5.

It is to be understood that the term transfer material means, in this disclosure and claims, the actual carbon or other material which transfers to the copy by means of the stroke of a type bar, for example: The term transfer medium is employed in this work to refer to a conventional carbon paper or similar medium which conventionally includes a backing member and the transfer material on the face thereof.

3,194,587 Patented July 13, 1965 The present invention will function acceptably whether the transfer material is applied directly to the body of the correction tabs or to a backing member of the transfer medium which is adhesively or mechanically secured to the body of the correction tabs, but the best results are obtained when the transfer medium is secured to the body material along the marginal edges to provide an air cushion intermediate the transfer medium and said body.

It is also to be understood that the correction tabs and the method of correcting carbon copies specifically relates to the correction of typewritten carbon copies after they have once been removed from the typewriter and displaced from their original positions relative to the first and other carbon copies, in which state it is substantially impossible to line up each of the copies so that they may be corrected in a manner which is conventionally practiced before the papers are removed from the typewriter.

It therefore becomes necessary to correct each of the carbon copies of a manifold typing group separately. conventionally, this is accomplished by reinserting into the typewriter the carbon copies, one at a time and by means of the inked ribbon, typing the corrections. Obviously, the correction then stands out to the eye and call attention to the mistake that was made.

This invention avoids this undesirable effect.

Referring now more particularly to the drawings, the reference numeral 11 indicates the body of sheet-like material of my correction tabs. Obviously, the body may be of any desired size from edge to edge, but for convenience I have found that tabs of a size substantially five inches in length and three inches in width are very acceptable.

The amount of the tab covered by the transfer material is also discretionary to a degree. However, for convenience, I prefer to cover only a fractional portion of one side face thus precluding the necessity of grasping the tabs at a place where the transfer material 12 will be transferred to the fingers of the typist. It is therefore desirable from this standpoint to provide area which is free from transfer material 12.

For facilitating positioning of the tab in such a way that the transfer material 12 will be properly disposed to impress the type bar character upon the carbon copy sheet, the transfer material 12 should cover a distance from /2 to 1 /2 inches preferably and extend to the side edges and the bottom edge of the body 11. However, obviously, the transfer material 12 may be placed at any location desired so long as it can be determined from the opposite side of the body 11 the exact location of the transfer material 12.

As shown in FIGURES 2 and 3 of the drawing, the physical characteristics of the body material 11 will vary among the several tabs. The degree of variation from one tab to another is discretional depending upon the result desired. FIGURES 2 and 3 show that one form of varying the physical characteristics is to provide a thickened body 11a in one instance and a thin body 11b in another. These characteristics may also be varied by the body material employed rather than by thickness of the bodies 11. As for example: the thickness of the body 11 may be reduced commensurately as the density of the body material increases because the sharpness of definition of the character transferred therethrough is varied by density as well as thickness and therefore by the term physical characteristics I include these and other changes of the body 11 where the function of such changes is to vary the degree of intensity and sharpness of definition of a character transferred by the transfer material 12 from a typebar of a conventional typewriter.

In some instances it will be more convenient to provide a transfer medium 13 which includes a backing material 14 and the transfer material 12.

I found that it is not practical to secure by adhesive or mechanical means a transfer medium 13. over its entire area to the fractional portion of one side face of the body .11 because of the fact that the transfer tab is often caused to form an arc to adapt to the roller platen configurations. I therefore secure the transfer medium 13 to the sheet-like body 11 at the marginal edges thereof by means of adhesive 15 (FIGURE 4) or by mechanical means 16 such as the staples 16 shown.

When using an adhesive 15, it desirable that the adhesive be of a permanently flexible nature such as rubber cement, so that the tab may bend as required.

When using the mechanical means such as staple 16, it will be noted that a continuous fastening along the marginal side edges is not preferred but spaced fastenings are employed so that there will be permitted slight movements of the transfer medium 14 to prevent wrinkles and distortion between the body material 11 and the transfer 13.

This feature of securing only at the marginal edges provides an added advantage of effecting an air space between the body material 11 or 11a and the transfer medium 13 which provides a cushioning effect to permit substantially exact duplication of the previously impressed characters and thus matched impressions.

It will thus be seen that the method of correcting a v typewritten carbon copy which, after removal, is again disposed in a typewriter in proper location to be supplied With the required characters from the typebar, is to dispose 'the transfer material 12 between the typebar andthe face of the carbon copy to be corrected which transfer 'material 12 is associated with a body 11 of material of sufiicient physical characteristic disposed between the transfer material 12 and the typebar to necessarily result in depiction of characters on the copy which are substantially simulated in degree of intensity and degree of sharpness of character to the other characters on the carbon copy.

While I have shown the body material 11 as being of various thicknesses, obviously, the same result may be obtained by using, for example, two or three sheets of material of the thickness shown in FIGURE 3 to provide a coincident thickness shown in FIGURE 2 of the drawing and it is not my intention to be limited to unitary body construction.

In practical application of the invention I have found that tabs having body material characteristics of three different types is effective for most uses. For example: the thinnest .body materialis employed for correcting the first and second carbon copies. The next thicker body material 11 is employed in correcting the third and fourth carbon copies, the next thicker body material is employed in correcting the fifth and sixth carbon copies. Then, if it is desired to correct carbon copies of higher number, the first or thinnest material may be added to the. tab of the thickest material to increase the cushioning and thus produce the desired effect. Also, each setof tabs is provided with three grades of transfer. material 12; Conventionally, carbon papers are manufactured with transfer material 12 or carbon of soft, medium and hard qualities. Of course, the various tabs Will be provided with transfer material 1 2 of the desired quality to most effectively admit of simulating the characters of the carbon copy being corrected.

Havingthus disclosed my invention, I desireto secure by Letters Patent of the United States the following:

1. In carbon copy correction tabs of sheet-like body materials each having a transfer rnedium along a fractional portion of one side, face, the improvement comprising: a

said transfer medium being a quantity of carbon paper secured superposed with respect to at least a portion of said one side face and at 'its marginal edges only with the transfer material disposed outwardly, to define an air space between said side face of said body and said transfer medium.

r 2. The invention defined in claimil and further characterized by said carbon paper being secured by means of a flexible adhesive.

3. The invention defined in claim 1 and further characterized by said carbonpaper being secured along its marginal side edges at spaced locations of substantially less size' than the dimensions of said side edges.

References Cited by the Examiner UNITED STATES PATENTS 2,233,791 3/41 Maddock 2s2' 2s x 2,623,762 12/52 Nelson 282-'29.2 2,647,765 8/53 Brechner 282--29.2

FOREIGN PATENTS 549,732 5/32 Germany.

ENGENE R. CAPOZIO, Primary Examiner, 

1. IN CARBON COMPY CORRECTION TABS OF SHEET-LIKE BODY MATERIALS EACH HAVING A TRANSFER MEDIUM ALONG A FRACTIONAL PORTION OF ONE SIDE FACE, THE IMPROVEMENT COMPRISING: SAID TRANSFER MEDIUM BEING A QUANMTITY OF KCARBON PAPER SECURED SUPERPOSED WITH RESPECT TO AT LEAST A PORTION OF SAID ONE SIDE FACE AND AT ITS MARGINAL EDGES ONLY WITH THE TRANSFER MATERIAL DISPOSED OUTWARDLY, TO DEFINE AN AIR SPACE BETWEEN SAID SIDE FACE OF SAID BODY AND SAID TRANSFER MEDIUM. 